Control mechanism for governors



J l 2 1940 J. 5. JENNINGS, JR

CONTROL IECHANISI FOR GOVERNORS Filed lay 28, 1936 3 Sheets-Sheet 1 W!v. V T ma W J 5 .5 my JB J ly z 1940 J. S. JENNINGS, JR

CONTROL MECHANISM FOR GOVERNORS F'iled May 28, 1936 3 Shuts-Shoat 2 J: iT. JNVENTOR. E- E. Q

J'aryz's' 5; anm'ng k lax 0&1) I $9.47

J l 2, 1940', J. 5. JENNINGS. JR 2 205,503

CONTROL MECHANISM FOR GOVERNORS I Filed May 2a, 1956 s Sheets-Sheet s11v VENTOR Jzrryzs 35. J6 272 :275 J71 Q BY I I M W ATT RNEYS.

Patented July 2, i940 UNITED STATES I 2,200.50:- com-aor. mzcnmsm roncovsr'moas Jarvis S. Jennings, In, Detroit, Mich, minor to MonarchGovernor Company, Detroit, Micln, a. corporation of Michigan ApplicationMay 28', 1936, Serial No. 82,278

2 Claims.

This invention relates to governor mechanism for internal combustionengines and particularly, although not exclusively, to governormechanism of the automatic vacuum operated type adapted to be mounted inan automotive vehicle and having improved means whereby the governor maybe adjusted or rendered partially or wholly inoperative at predeterminedtimes.

An object of the invention is to provide a governor, especially of thevacuum operated type, having a governing valve, such as a balanced orunbalanced butterfly valve, responsive to the engine suction or vacuum,and wherein remote control mechanism is provided for rendering thegovernor or governing valve operative or inoperative at anypredetermined time.

A further object of the invention is to provide a governor, especiallyof the vacuum operated type, having a governing valve responsive toengine suction, such valve being either of the socalled flow actuatedtype, such as an unbalanced butterfly valve, or the type, such as abalanced butterfly valve, controlled by a vacuum actuated piston ordiaphragm, and wherein means is provided for locking the governing valveshaft in any predetermined angular position thereby rendering thegovernor ineffective to govern the engine at the set speed.

A further object of the invention is to provide a vacuum operatedgovernor having means, such as a key operated remote control mechanism,for rendering the suction or vacuum actuated means of the governor,which may be the piston or the unbalanced portion of the governingvalve, inoperative or partially so whereby the main counteracting springof the governor will function to hold the governing valve inpredetermined open position with the governor ineffective to govern theengine at the normal set speed.

A further object of the invention is to provide a vacuum operatedgovernor having mechanism, such as a crank arm or cam lever, for turningthe governing valve shaft, and wherein remote control mechanism, adaptedto be mounted, for example, on the dash or instrument panel of thevehicle, is provided for locking said mechanism in any predeterminedposition whereby the goveming valve will be rendered ineffective togovern the engine at the normal set speed.

A further object of the invention is to provide a remote controlmechanism, preferably a mechanism which is key operated, which isadjustable to lock the governingvalve shaft in a position to maintainthe governing valve open during op- 55 eration of the engine, and whichis also ad- Justable to release the valve shaft and permit the governorto govern the engine at the, set speed.

A further object is to provide a relatively simple governor controlmeans characterized by the provision of mechanism remotely controlledfor 6 adjusting the governor through adjustment of the main springthereof and also, preferably, for shutting off or disconnecting thegovernor as desired, and adapted to be looked, as by a key operatedmechanism, in off and on" positions of the governor or in variouspositions of adjustment of the spring.

Other objects of this invention will appear in the following descriptionand appended claims, reference being had to the accompanying drawingsforming a part of this specification wherein like reference charactersdesignate corresponding parts in the several views.

Fig. l is a perspective view, partly in section, illustrating theassembly of the governor and 20 control mechanism in connection with adown draft carburetor.

Fig. 2 is a side elevation, partly in section, illustrating the controlmechanism adapted to be mounted on the instrument panel of the vehicle.

Fig. 3 is in part a longitudinal sectional elevation of a governoradapted to be controlled in accordance with the present invention.

Fig. 4 ma fragmentary side elevation of the governor shown in Fig. 3,illustrating a modified 30 form of control mechanism.

Fig. 5 is a section through lines 5-5 of Fig. 4 in the direction of thearrows.

Fig. 6 is a section through lines 5-6 of Fig. 5 in the direction of thearrows. 35

Fig. 7 is a view similar to Fig. 6 illustrating the valve shaft inunlocked position.

Fig. 8 is a plan view of a modified type of governor illustratinganother form of control mechanism.

Fig. 9 is a longitudinal sectional view of a governor and controlmechanism therefor embodying the present invention.

Fig. 10 is a section taken through lines |0l0 of Fig. 9 in the directionof the arrows. 45

Fig. 11 is an enlarged fragmentary sectional view taken substantially onthe line ll-ll of Fig. 9, looking in the direction of the arrows.

Before explaining in detail the present invention it is to be understoodthat the invention is not limited in its application to the details ofconstruction and arrangement of parts illustrated in the accompanyingdrawings, since the invention is capable of other embodiments and ofbeing practiced or carried out in various ways. 55

stallation .of a governor in connection with the carburetor andintakemanifold with key-operated remote control mechanism for renderingthe governor operative or inoperative is illustrated in Fig. 1. 'Asshown in said figure, the governor l0, which is of the vacuum-operatedtype. is interposed in the intake passage or conduit II from thedown-draft carburetor i! to the intake manifold it. As shown in thisview, the air cleaner, illustrated at II, is connected to the upper endof the intake pipe ilkin this instance the governor ll is provided atone side thereof with a valve body II which is bolted in place in theintake pipe.

Referring to Fig. 3, wherein the governor it is illustrated as asuitable device for the incorporation of the present invention, it willbe seen that the butterfly valve II, which is located in the intakepassage within the valve body ll of the governor, is attached to atransverse valve shaft II. It will be \mderstood that the governingbutterfly valve It lies within the main intake passage Ii, a portion ofwhich is formed within the valve body I! of the governor. The rock shafti1 is journalled in suitable hearings in the body II and in the governorcasing its at one side of the intake passage. Secured to the shaft i1within the casing Ila is-a crank arm ll carrying a cam roller I!cooperable with the inclined face of a suitable cam carried by a slidingcam carrier II. A light spring is connected at one end to the casing andat the opposite end to an arm 23 projecting from the rock shaft H in adirection opposite to the crank arm ll. The'cam carrier ii isattached'to a sliding piston rod 24 secured to a piston 25 within acylinder 25a formed in one end of the casing. Movement of the pistoninwardly or to the left in Fig. 3 is effected by means of a main spring25, and movement of the piston in the oppo ite direction against theaction of the spring is caused by differential pressures acting onopposite ends of the piston, the piston being subject at its inner endto the atmospheric pressure within the casing and at its opposite end tothe partial vacuum within the intake passage Ii by means of a conduit 5iextending through the embossed or rib portion ila in-the casing wall 52.The governor, shown in this embodiment of the invention, is constructedand is adapted to operate substantially in accordance with my copendingapplication Serial No. 520,060.

Formed within the valve casing its at one side of the crank am it is aboss 21 bored to provide a cylindrical e 28. Within this passage islocated a sliding plunger 2!. The plunger is provided with a laterallyprojecting pin engaging the upper edge of the crank arm II. The pinprojects through a guide slot for engagement with the crank arm and thelength of the slot is such as to provide limits for the sliding movementof the plunger 2!. Secured to the lower end of the plunger 20 is aBowden wire 32 which projects through a screw cap a secured to theextension 14 of the boss 21. The casing ll of the Bowden wire or cableis fastened by means of a plug to the cap it as shown. The

cable or wire leads from the governor. to a suitable remote point, suchas the instrument panel 36 of an automotive vehicle, within theconvenient reach of the operatorof the vehicle.

The control mechanism for the governor is mounted within a housing orbody 31 having a flanged end flaabutting against the rear face of theinstrument panel 30, see Fig. 2, the body 31 having a threaded extension31b extending through an aperture in the panel. The body is clamped ontothe panel by means of a nut 38. The body or housing 31 is provided witha cylindrical bore II within which is slidingly mounted a cylindricalplunger 4!. The rear end of the wire or cable 32 is fastened at 32a tothe forward end of the plunger 40, and the casing 35 is fastened at 310to a boss projecting rearwardly from the body II. The plunger 4. isprovided with a central bore to receive a suitable lock mechanismhaving, for example, a conventional lock cylinder 4| this mechanismbeing controlled by means of a key 42 insertable through a key hole inthe forward end of a terminal knob 43 on the plunger ll. By turning thekey 42 and the lock cylinder ii, an eccentric pin 44 projectingtherefrom is oscillated to actuate a latch 45. The eccentric pin extendsinto an elongated transverse slot in the latch 45, the latter beingslidable in a vertical slot 4' in the plunger and having a latchprojection movable either into the notch 41 or the notch 48 formedwithin the barrel 3]. Movement or oscillation of the eccentric pin 44 inone direction will retract the latch 45, and movement in the oppositedirection will extend the latch into either one of the notches accordingto the position of the plunger 40. At the bottom of the barrel 31 thereis provided a guide slot ll within which slides a pin 50 attached to theplunger 40. The pin 50 cooperates in the slot to prevent rotativemovement of the plunger ll. The construction of the remote controlmechanism, illustrated in Fig. 2, is substantially the same as thatshown and deggrilggd in my copending application Serial No. From theforegoing it will be seen that upon retracting the plunger 43 to theposition illustrated in Fig. 2, the Bowden wire 32 will be pulledrearwardly thereby drawing down the plunger 2| in the cylindrical hole20. By this.

operation the pin 3| will pull down the crank arm II to the dotted lineposition shown in Fig. 3, thus rotating the governing valve shaft i1 soas to turn the valve it into its wide open position. At such time thegovernor will be inoperative to govern the engine, and the plunger Mlmay be locked in such position by means of the key 42. By unlocking theplunger and pushing it forwardly to the dotted line position of Fig. 2and locking the same in such position through coopplunger 28 and itscontrol pin II will be moved to the opposite end of the slot 3| therebyreleasing the crank arm I. and permitting the governor to function.

Referring to the embodiment illustrated in Figs.4to'linclusive,itwillbeseeninthisinstance that the valve body II of thegovernor II is provided at one side thereof "with an enlarged portion orboss II within which the rock shaft I! for the governing valve isjournalled. An annular recess II is provided around theahafti'Lthisrecessbeingintersectedbyan eration of the latch I in thenotch 48, the

elongated drilled hole or slot 51 within which is $606,566 mounted asliding plunger 66. This plunger has an elongated slot 56a and into thisslot projects a crank pin 66 secured to the governing valve shaft l1.The Bowden wire 32 of the cable is fastened to one end of the plunger 56whereby upon shifting the control knob 43 inwardly or outwardly theplunger 56 will be correspondingly shifted within the slot or hole 51.

From the foregoing it will be readily seen that upon pulling the controlknob 43 outwardly to its full line position shown in Fig. 2, therebyexerting a pull on the wire 32, the inner end of the slot 56a in theplunger 56 will engage the pin 66 and force it into the position shownin Fig. 6. This action will result in rocking the shaft l1 and rotatingthe governing valve I6 into its wide open position. Thus, with the partsadjusted, as illustrated in Fig. 6, the governing valve may be held andlocked in its wide open position, thereby rendering the governorinoperative to govern the engine. The governor may be placed inoperative condition by unlocking the control plunger by means of the key42, sliding the control knob 43 inwardly to the dotted line position ofFig. 2, thereby moving the plunger 56 to the position illustrated inFig. 'I. At this time the governing valve shaft will be free to turnsince the pin 60-will be free to move laterally within theslot 56a.Since, therefore, the shaft I! at this time is unlocked andunrestrained, the governing valve and associated governor mechanism willbe free to operate for the purpose of governing the engine.

Referring to the embodiment illustrated in Fig. 8, in this instance 'asomewhat different type of governor is illustrated. This governor, as isknown in the art, includes a valve body, somewhat analogous to the valvebody l5, which includes a portion of the intake passage, and within thispassage is located an unbalanced or offset butterfly valve 62. The valve62 is of the flow actuated or velocity type, being movable toward closedposition within the intake passage by reason of the velocity of thegaseous mixture passing therethrough and also by reason of differencesin pressures at opposite sides of the valve. The governing valve 62 isfixed to a cross-shaft 63 journalled in the valve body and also in thevalve casing 6| offset at one side thereof as illustrated in full linesin Fig. 8. Within this casing is located a crank arm 64 fastened to theextension of the valve shaft 63. This arm carries a cam roller 65cooperable with the cam face 66a of a cam lever 66, the latter beingpivoted at 6'! to the casing for swinging movement therein. The outerfree end of the cam lever 66 is connected at 68 to the end of a tensionspring 66 which is fastened at 16 to the casing. It will be understoodthat closing movement of the governing valve 62 is resisted.- by thecounteracting spring 69, the cam mechanism providing a differentialmeans interposed between the spring and valve. The foregoingconstruction is part of the prior art, and therefore, a. furtherdetailed description of the governor is not deemed necessary herein. 7

The governor casing 6| is provided at one side thereof with a boss Hwhich is drilled longitudinally to provide a hole or slot 12 withinwhich is slidingly mounted a plunger 13. Secured to one end of thisplunger is a control pin H which projects through a slot I5 in the bossII and wall of the casing 6|. The pin H projects into the casing inposition to engage one edge 66b of the cam lever 66. The outer end ofthe plunger 13 is fastened to the Bowden wire 32 of the cable 66. Fromthe foregoing it will be readily seen that I retraction of the controlknob 43 to the full line position of Fig. 2, thereby exerting apull onthe wire 32, will move the plunger 13 into the position illustrated inFig. 6, thereby causing the pin I4 to swing the cam lever 66. Throughengage ment of the cam face 6611 with the roller 65, this movement ofthe cam lever will be transmitted to the arm 64. The force exerted bythe plunger 13 on the cam lever 66 in conjunction with the pull of thevspring 66 will thus rotate the valve shaft 63 and swing the governingvalve 62 into its wide open position and hold it in this position duringengine operation. By looking the plunger 46 with the key 42 the valve 62will be locked in wide open position, thus rendering the governorinoperative to govern the engine. By.unlocking the plunger 46 andshifting the same forwardly to the dotted line position, the control pinM will be shifted to the end of the slot I5, thereby permitting freemovement of the cam lever 66 and full goveming operation.

Referring to the embodiment illustrated in Figs. 9 to 11 inclusive, inthis instance the remote control mechanism is also applied to thegovernor l5, but in lieu of the push-and-pull mechanism the control knoband its plunger are adapted to be rotated into various positions toadjust the tension of the main spring 26. Moreover, rotative adjustmentof the control knob is also effective to render the governor inoperativewhen desired.

In Fig. 9 it will be noted that the vacuum take-01f from the intakepassage communicates through the conduit or passage 5| in the boss 5lawith the back-side of the piston 25 leading-into the space occupied bythe main spring 26. The end of the casing portion 52 is closed by meansof a specially formed cap or closure member 16 having lugs 11 by meansof which it is bolted at 16 to the end of the casing 52, the jointbetween the parts being sealed to provides. gastight joint. The end ofthe vacuumpassage 5| communicates through a port 66 with a slot orpassage 19 in the wall of the cap I6. Within this passage is located aconical valve 8| adapted to cooperate with the annular edge of the portto close off the vacuum passage 5|. The valve 6| is carried by a body6|a secured to an ear 62 slidable within the slot or passage 16. The ear62 projects from the peripheral edge of a disk or collar 63 centrallybored and tapped to cooperate with the threaded shank 64 of a. rotatablecoupling member 65. The cylindrical member 65 is coupled by means of atongue and slot connection 61 with a cylindrical member 66, both membersbeing rotatable within the cylindrical bore 66 of a neck portion- 60projecting from the 70 From the foregoing it will be seen that, uponrotation of the coupling member 65 and the threaded'portion 64, thecollar 63, which is held against rotation by means of guide portion I26thereof slidable within a guide slot |2|, will be moved longitudinallytoward and from the cating it. Inthismanner the spring 20 maybe adjustedto have diiferent degrees of compression, and by adjusting the collarthe maximum distance the valve II will close of! the port ll, therebyrendering the governor inoperative. This action at the same time willincrease the eifort of the spring 20 to such air-extent that it i willhold the governing valve I0 in wide open position.

In the present instance, as illustrated in Figs. 9 and 10, the controlmechanism for the gov-- ernor is mounted within'a housing or body llhaving a flanged end "a abutting against the rear face of the instrumentpanel 30, the body having a threaded extension 00b extending through anaperture in the panel. The body is clamped onto the panel by means of anut 00. The body or housing 05 is provided with a cylindrical bore 01within which is rotatably mounted a cylindrical plunger 90. The rear endof the flexible cable 92 is fastened to the forward end of the plunger00 and the rear end of the casing 00 for the cable is fastened at "Dto'the body 05. The plunger 90 is provided with a central bore toreceive a suitable lock mechanism having, for example, a conventionallock cylinder 9!, this mechanism being controlled by means of a key I00in'sertable through a key hole in the outer end of the control knob IIIof the plunger; Projecting forwardly from the end of.

the cylinder 99 is aneccentric pin I02 projecting into an elongated slot103a in a latch piece I00 movable vertically within a slot ill in theplunger 98. The body 95 is provided witha suitable number of notches orrecesses I", all located in a common transverse plane, four beingillustrated by way of example in Fig. 10. The latch body I03 has a latchprojection I031) adapted to extend into any one of the notches I".

The plunger 98 is held against longitudinal slidspouses control knob IIIthe cable 02 will be rotated thereby rotating the coupling members ll,00 and the threaded portion 04 and causing the adjustable collar 80 totravel longitudinally within the closure member I0 of the governor.

resilient means, valve means carried by the iongitudinally movable meansto interrupt the con-- necting means between the cylinder and intakepassage when the longitudinally movable means approaches one extremeposition, and guide means between the movable means and cylinder toprevent the longitudinally movable mean fromrotating in the cylinder.

2.In a governor for a motor-vehicle having an instrument panel, agovernor for an internal combustion engine havingan intake passage, avalve interposed in the intake passage, a cylinder, connecting meansbetween the cylinder and the intake passage, a piston slidably mountedin the cylinder and responsive on opposite sides to atmospheric andintake passage pressures controlling the governor valve, resilient meansen;- gaging the piston and urging the valve towards open position,longitudinally movable means in the cylinder to vary the force of theresilient means, valve means carried by the longitudinally movable meansto interrupt the connecting means between the cylinder and intakepassage when the longitudinally movable means approaches one extremeposition, guide means between the longitudinally movable means andcylinder to prevent the longitudinally movable means from rotating inthe cylinder, a threaded member in' the cylinder cooperating with thelongitudinally movable means to move it longitudinally in the cylinder,manually operable rotatable means mounted at a remote point and motiontransmitting means between the manual means and the threaded member.

JARVIS S. JENNINGS, JR.

